🔹 HC-SR04 Ultrasonic Distance Sensor Module
The HC-SR04 ultrasonic module is a widely used distance measuring sensor that uses ultrasonic waves to detect objects and measure distance accurately. It provides a non-contact measurement function with a range of 2cm to 400cm and high accuracy. Commonly used in robotics, obstacle avoidance, automation, and DIY electronics projects.
✅ Features:
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Model: HC-SR04
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Operating Voltage: 5V DC
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Current Consumption: ~15mA
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Measuring Range: 2cm – 400cm
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Accuracy: up to ±3mm
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Frequency: 40kHz ultrasonic signal
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Trigger Input: 10µs TTL pulse
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Echo Output: TTL signal proportional to distance
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Compact module with 4-pin interface (VCC, Trig, Echo, GND)
📦 Applications:
✔️ Robotics and obstacle avoidance systems
✔️ Distance and object detection
✔️ Level measurement (water tank, etc.)
✔️ Arduino, ESP32, and microcontroller projects
✔️ DIY electronics and automation
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